We were on the Zuiderdam this past Christmas and the Oosterdam end of Feb. Both sailings had what HAL now refers to as a late "snack" starting at 11 p.m. and each night the food prepared was of a different ethnic origin,included a cooked-to-order section, plus pizza, burgers, desserts, etc. It is a scaled-down version of what was once known as the "Midnight Buffet", but it certainly exceeds the common definition of "snack".